/*
 * Digital Audio Mobile - A multi track studio for Windows Mobile
 * Copyright (C) 2008 David Olsson
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#if !defined(__COMPOSITION_H__)
#define __COMPOSITION_H__

#include <msxml2.h>

#include <list>
#include <sstream>

#include "MusicTime.h"

class AudioBuffer;
class Track;

class Composition: private ISAXContentHandler, private ISequentialStream {
public:
    Composition(const TCHAR *filename) throw();
    ~Composition();

    MusicTime startTime() const throw();
    MusicTime endTime() const throw();

    unsigned int beatsPerMinute() const throw();
    void setBeatsPerMinute(unsigned int bpm) throw();

    unsigned int beatsPerMeasure() const throw();
    void setBeatsPerMeasure(unsigned int bpm) throw();
    unsigned int beatNoteType() const throw();
    void setBeatNoteType(unsigned int bnt) throw();

    Track *addTrack() throw();
    void removeTrack(Track *track) throw();

    unsigned int numTracks() const throw();
    const std::list<Track *> &tracks() const throw();
    std::list<Track *> &tracks() throw();
    void superPositionTracks(AudioBuffer *buffer, const MusicTime &bufferStart) throw();

    bool isModified() const throw();
    void setModified() throw();

    void createAudioFilename(TCHAR *filename) const throw();

    bool save() throw();
    void read() throw();
private:
    ULONG AddRef();
    ULONG Release();
    HRESULT QueryInterface(REFIID iid, void **ppvObject);
    HRESULT putDocumentLocator(ISAXLocator *pLocator);
    HRESULT startDocument();
    HRESULT endDocument();
    HRESULT startPrefixMapping(const wchar_t *pwchPrefix, int cchPrefix, const wchar_t *pwchUri, int cchUri);
    HRESULT endPrefixMapping(const wchar_t *pwchPrefix, int cchPrefix);
    HRESULT startElement(const wchar_t *pwchNamespaceUri, int cchNamespaceUri, const wchar_t *pwchLocalName, int cchLocalName, const wchar_t *pwchQName, int cchQName, ISAXAttributes *pAttributes);
    HRESULT endElement(const wchar_t *pwchNamespaceUri, int cchNamespaceUri, const wchar_t __RPC_FAR *pwchLocalName, int cchLocalName, const wchar_t *pwchQName, int cchQName);
    HRESULT characters(const wchar_t *pwchChars, int cchChars);
    HRESULT ignorableWhitespace(const wchar_t *pwchChars, int cchChars);
    HRESULT processingInstruction(const wchar_t *pwchTarget, int cchTarget, const wchar_t *pwchData, int cchData);
    HRESULT skippedEntity(const wchar_t *pwchName, int cchName);
    HRESULT Read(void *pv, ULONG cb, ULONG *pcbRead);
    HRESULT Write(const void *pv, ULONG cb, ULONG *pcbWritten);

    static void writeUtf8(const TCHAR *str, std::stringstream &ss) throw();

    TCHAR *m_filename;
    TCHAR *m_audioDir;

    unsigned int m_bpm;

    unsigned int m_sigBpm, m_sigBnt;

    unsigned int m_trackCount;
    std::list<Track *> m_tracks;

    bool m_modified;

    HANDLE m_hFile;
};

#endif
